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  • Category: Internet, Networking and Connectivity

    What is dual band and how does it affects the wifi signal in our home?


    Eager to more about dual band and how does it affects the wi-fi signal in our homes? Our technical experts have the right answers.

    I sometimes hear dual band to people using modem/router but I don't know exactly how this thing applies in reality. I wanted to know how it affects the Wi-Fi connectivity in the house because if it does, How and in what way? Do we really need to have a dual band modem router for us to have a good connectivity?
  • Answers

    2 Answers found.
  • Wifi transmission happens in two frequencies - 2.4 GHz and 5 GHz channels. Till around a decade before, 802.11b Wi-Fi routers used to operate on the 2.4GHz band and were used in a home setting. 802.11a (5 GHz) was used in commercial settings.
    With the advent of 802.11n, Wifi routers began supporting dual bands, that is both 2.4 GHz and 5 GHz channels as a standard feature.

    Advantages
    1. Greater flexibility since you don't have to worry about in which setting the router is going to work. You might have some old devices at home with work only in the 2.4 GHz channel, so with these routers, both your old and new devices work.
    2. 5 GHz channel offers greater bandwidth, a dual-band router enables your devices to take advantage of this.

    In short, you need to see if you have any old device like a Microwave Over which connects through Wifi for wireless control or a Cordless phone, you need a dual band router surely to support these old as well as your new devices including your laptop and smartphone. Nowadays, most routers are dual-band only so the one you are using, unless it is a decade old, it will be working on dual-band.

  • In the single band router the data speed is capped at 54 Mbps. Single band router is cheaper than dual band but being an old technique has some disadvantage as compared to dual band router.

    The speed is quite high in dual band though limited to the speed as provided by your internet provider but theoretically it can go up to 800 Mbps.

    So in the dual band router two RF channels 2.4 GHz and 5 GHz are available to communicate with your devices whether mobile or tablet etc. The internet data wirelessly communicates to your devices from the router.

    The obvious advantage is speed and more bandwidth. The current market trend is now dual band routers only.

    Knowledge is power.


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